Historical · published 6 May 2021 · last verified 17 August 2026
Ageing firmware and weak defaults
A Which? investigation reported weaknesses in several old ISP-supplied models.
Scope caveat: Historical evidence. Do not use this as a current provider-wide ranking or a verdict on modern routers.
- Affected products
- Older EE, Sky, TalkTalk, Virgin Media and Vodafone routers
- Hardware revisions
- Legacy models listed in the original research
- Firmware range
- Firmware current in 2021
- Threat
- Ageing firmware and weak defaults
- CVE references
- Not applicable
- Impact
- A Which? investigation reported weaknesses in several old ISP-supplied models.
- Conditions required
- Applies only to the specific legacy models tested at the time.
- Vendor response
- Providers responded individually; several models have since been replaced.
- Consumer action
- Ask whether your exact model still receives updates and request replacement if it does not.
- Status
- Historical
- Source type
- Mainstream press